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Beilstein-Institut, Beilstein Journal of Organic Chemistry, (11), p. 9-15, 2015

DOI: 10.3762/bjoc.11.2

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A facile synthesis of functionalized 7,8-diaza[5]helicenes through an oxidative ring-closure of 1,1’-binaphthalene-2,2’-diamines (BINAMs)

Journal article published in 2015 by Youhei Takeda ORCID, Masato Okazaki, Yoshiaki Maruoka, Satoshi Minakata
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

A facile and moderately functional-group-tolerant synthetic method for the preparation of 7,8-diaza[5]helicenes has been developed. It comprises of an oxidative ring-closing process of 1,1’-binaphthalene-2,2’-diamine (BINAM) derivatives with a chlorine-containing oxidant (t-BuOCl) in the presence of a base (2,6-lutidine). In addition the basic physicochemical properties of newly synthesized compounds have been investigated.